All three 100 kW klystrons were successfully tested to 50 % power levels (the limits of our presently installed power).
Management:
Discussions were held this week with our JTO and ONR contract monitors
for documentation needed for FY02 support for presently unfunded FEL upgrade
activities including: (1) final system commissioning; (2) completion of
the third cryomodule; and (3) modification or addition of a new wiggler
for optimized high power operation at 1- 2 microns.
The project monthly technical and financial reports for November 2001 were completed and forwarded to the DOE, ONR and AFRL contract monitors.
The tasking statements for the newly awarded JTO proposals on cryogenic mirror development
and drive laser development were received from JTO and returned with comments so that funding for these tasks can be added to our existing or a revised ONR/DOE Memorandum of Agreement.
Michelle Shinn and George Neil made presentations on our work on laser materials damage studies at the JTO Project Continuation Review this week (Jan. 8-9) held in Albuquerque.
WBS 4 (Injector):
The gun chamber had its top and bottom flanges welded on and the spider
locating groove is being machined. Tolerances on the gun stand drawings
were loosened up and the package is back out for fabrication bids. The
gun mounting ring was submitted to the shop for fabrication. W&M is
running a test implant on a 3" diameter tube prior to implant of the cathode
support tube. Solenoid mechanical modifications are being designed to facilitate
placing correctors inside of the solenoid.
WBS 6 (RF):
Quarter Klystrons - All 3 of the 100 kW klystrons were successfully
tested at half power with the existing HVPS. Modifications are being made
to the klystron cart design to make the piping more compact. The LCW headers
in the RF gallery are being drained today so larger taps can be installed
for the klystrons, circulators, RF loads, and HOM loads.
Quarter HVPS - The rigging contractor on next Wednesday plans to remove the existing transformers, inductors, and variacs and install the new transformers (3000 lbs) and inductors (1600 lbs).
Master Oscillator - The Master Oscillator is to be upgraded (more output power) and extended to Zones 3 & 4.
2G Dump - With RadCon's permission the water bottles were removed, drained, and stored in their plastic milk cartons. This was necessary before the 2G Dump can be dismantled. This dump is still activated and its removal will require RadCon's supervision.
WBS 8 (Instrumentation):
Several manhours have been spent this week removing and re-routing
cables in preparation for cable tray modifications to support the new machine.
Six beamviewers have been assembled and delivered to the vacuum group for mounting on their respective pedestals.
The new inventory control and barcoding data base is nearly functional. There are some security items that need to be added before it becomes available for general access.
Design of a new 8 channel Stepper Motor Control Chassis is complete and should be ready to start fabrication next week.
WBS 9 (Transport):
Dipoles
Optical Chicane Dipoles (GW)
o At Magnet Enterprises International in Oakland CA., contrary to what
was reported earlier, the potting of the first GW coil had some dry spots.
They are making a new coil and redoing their potting mold to eliminate
the problems. The potting of the new coil should begin next week. Machining
of cores and parts has started.
Injector Dipoles (DU/DV)
o Procurement is sending out the bid for the magnets today. It will
be an electronic procurement as was successful with the 180 degree Dipole
(GY).
Arc Dipoles (GY, GX, GQ)
o Dave Douglas accepted the magnetic design of the Reverse Bends (GQ).
He has asked Advanced Energy Systems (AES) to give him more field integral
information on the switch mode (to the UV Line) of the Bend Magnet (GX)
before he accepts this design. This variation of the powering uses only
half of each coil at full current to reduce the field for the electron
beam to angle into the UV beam line. The vellums of all the drawings have
been prepared for signature and the specifications are in composition.
o Steel was shipped and received for the 180° Dipoles (DY) to Bosma
Inc. of Ohio for manufacturing the Cores. Copper was shipped Wang NMR of
CA for coil manufacturing.
Magnet Measurement
o Measurement of the dipole chamber's magnetic properties started up
using weld samples prepared by the company that welded the 180° chambers
last time.
o Design is nearly complete for the probe system to measure absolute
field of the Bend and Reverse Bend Dipoles.
Quadrupoles
3 inch quad (QX)
o The core and assembly vender, New England Technicoil (NTC) shipped
the first 10 completed quadrupoles.
o Magnet Enterprises International (MEI) shipped 60 more coils to New
England Tecnichoil.
Trim Quad (QT)
o The magnets continue in fabrication at Milhous Control of Virginia.
Sextupole (SF)
o DULY Research has a magnetic model for the sextupole that achieves
specification. They are now working at superposing the vertical dipole
corrector field onto the magnet.
Octupole (OT)
o Work on this magnet is on furlough until the sextupole is designed.
Corrector Dipoles (DB, DJ)
o These magnets continue to be qualified on the measurement stand.
Beam Line and Vacuum
o Work is going very well at AES on the design the Arc Chambers.
o Design work on girders and stands continued. Parts for the regions
between the cryomodules are finally in checking.
o The girders for return leg quadrupoles are being assembled in the
new space available in the addition to the Test Lab.
WBS 11 (Optics):
We received the optical cavity stepper motors with integral PZTs before
the end of the year. We’re building a small enclosure so we can preserve
the UHV rating and begin testing. We also received ball bearings treated
by Dicronite, and we will begin testing them for particulate generation.
Review of the drawing package for the optical cavity assemblies revealed
a few parts that, with small changes, would yield items that are simpler
to fabricate. The revision of the ultraviewer mirror mount has started.
We moved the OCCMS work to the User Lab 6 hutch, where we can take advantage
of the enclosure to dampen out air currents.
We have devoted some time to eliminating air bubbles in the glue joint for the deformable mirror. By degassing the mixture, we have been able to drop the density dramatically (from ~100 to 3/sq. in.).
Over the holidays we held e-mail meetings with a possible vendor for the drive laser oscillator.
Operations/Decommissioning/Other Activities:
We received a power meter from Molectron that had been sent out for
repair and recalibration.